Heat treatment and age hardening of Al-Si-Mg-Mn commercial alloy with addition of Sc and Zr
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10368372" target="_blank" >RIV/00216208:11320/17:10368372 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.matchar.2017.04.017" target="_blank" >http://dx.doi.org/10.1016/j.matchar.2017.04.017</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matchar.2017.04.017" target="_blank" >10.1016/j.matchar.2017.04.017</a>
Alternative languages
Result language
angličtina
Original language name
Heat treatment and age hardening of Al-Si-Mg-Mn commercial alloy with addition of Sc and Zr
Original language description
Microstructure and precipitation processes in an Al-Si-Mg-Mn-Sc-Zr alloy were studied. The as-cast alloy contains fine Al-3(Sc,Zr) particles with L1(2) structure, rods and/or needles of the Mn,Fe-containing phase and Si,Mg co-clusters. These co-clusters have a detrimental effect on precipitation hardening which is caused exclusively by fine needle-shaped beta" phase particles. The pronounced precipitation of the Al-6(Mn,Fe)-phase was observed during isochronal annealing in the as-cast alloy. Nevertheless, the precipitation has a negligible effect on hardness. The apparent activation energy for the Al-6(Mn,Fe)-phase precipitation was calculated as (170 +/- 20) kJ.mol(-1). Heat treatment at 530 degrees C for 45 min dissolves Si,Mg co-clusters but causes a precipitation of the Al-12(Mn,Fe)(3)Si phase particles while the Al-3(Sc,Zr) particles remain unaffected. The Sc and Zr addition to the Al-Si-Mg-Mn alloy influences precipitation hardening in the course of isochronal annealing neither in the as-cast nor in the solution-treated alloy. The age hardening is very poor in the as-cast alloy (similar to 4%) and it is more pronounced in the solution-treated alloy (similar to 60%) due to more convenient size, aspect ratio and number density of the beta" and beta' phases. The apparent activation energy values of precipitation of the transient beta" and beta' phase were determined as similar to 90 kJ.mol(-1) and similar to 130 kJ.mol(-1), respectively.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials Characterization
ISSN
1044-5803
e-ISSN
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Volume of the periodical
129
Issue of the periodical within the volume
July
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
1-8
UT code for WoS article
000403624300001
EID of the result in the Scopus database
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